S.H.I.E.L.D. (2010-2011)

S.H.I.E.L.D. (2010-2011)

Leonardo Da Vinci was an agent of S.H.I.E.L.D. So was Issac Newton. And Imhotep and Zhang Heng and Galileo. They saved the world long before Captain America or Iron Man were ever born, but what does this mean to our heroes of today?